iSSj-] Brewster on an apparently New Gull. 21^ 
and secondaries mostly white on their exposed surfaces, with markings of 
dull slate-gray. Primaries : First , snow white on both webs for a ter- 
minal space of about two inches, and white to its base on the inner web, 
except next the shaft ; outer web (except terminally) slate-gray, shading 
insensibly into white near the base of the feather and bordered by a stripe 
of about its own width, but of a lighter shade, on the inner web next the 
shaft, which is strongly tinged with the same color. Second , with the 
gray confined to a space of about four inches on the outer web, where it 
touches the shaft for a distance of scarcely more than an inch, receding 
from it very gradually towards the base, abruptly in the other direction, 
at both ends tapering to a point on the margin of the feather; the base of 
this primary is tinged on both webs with the color of the mantle, which, 
on the inner web, fades imperceptibly into white about three inches from 
the tip, but on the outer is deepest at the point of junction with the gray 
stripe, where the line of demarkation is nevertheless perfectly distinct ; 
there is also an indication of a sub-terminal bar in a transverse spot of 
dusky on the inner web about half-an-inch from the tip. Third , with the 
gray occupying the entire outer web for a space of rather more than two in- 
ches at its basal end, tapering gradually away from the shaft, as in the sec- 
ond primary, but at the other extremity crossing the inner web of the 
feather and forming a well-defined and continuous sub-terminal bar of 
about half-an-inch in width, which confines the white to a rounded terminal 
spot and a short space on the inner web, the remainder of the feather being 
tinged with the color of the mantle. Fourth , with the slate paler and more 
restricted but still forming a perfect sub-terminal bar. Fifth , with the gray 
confined to two transverse sub-terminal spots on the opposite edges of the 
feather and separated by a wide space of white next the shaft ; this feather 
is otherwise similar to the remaining primaries, which, with all the second- 
aries, are perfectly plain and concolor with the back to within about two 
inches of their tips where their pearly-blue color changes rather abruptly 
into pure white. 
“Iris cream-color; bill yellow with vermilion spot on lower man- 
dible ; orbital ring reddish-purple ; legs and feet flesh-color” (mem. on 
label). 
Dimensions. “Length 24.00” ; wing, 16.25; culmen (chord from feath- 
ers), i-75; bill from nostril, .85; do. from gape, 2.60; height at anterior 
end of nostril, .65 ; height at angle, .61 ; tarsus, 2.35 ; middle toe and claw, 
2.27 ; tail, 6.65. 
Habitat. Cumberland Sound (Kumlien) and Greenland? (Bruch), mi- 
grating south in winter to the Bay of Fundy and Grand Menan. 
The following measurements are of Mr. Merrill’s, Mr. Smith’s, and Mr. 
Welch’s specimens, respectively : $ , adult (winter pi.). Grand Menan, 
N. B., Jan. 21, 1883. Length, “23.75”; wing, 17.00; culmen, 1.85; bill 
from nostril, .89; gape, 2.75 ; height at nostril, .65 ; do. at angle, .65; tar- 
sus, 2.30; middle toe and claw, 2.28; tail, 7.22. 
Immature, sex? Bay of Fundy, Feb., 1883. “Length, 23.50; extent 
50.00”; wing, 15.50; culmen, 1.6$; bill from nostril, .89; gape, 2.50; 
